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Finding the Fourth Proportional to 363,659.60, 545,230.20 and 138,933.20

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Solution

The fourth proportional to 363,659.60, 545,230.20 and 138,933.20 is: 208,300.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,659.60 : 545,230.20 = 138,933.20 : x
  2. Step 2: Convert to fraction form
    363,659.60/545,230.20 = 138,933.20/x
  3. Step 3: Cross multiply
    363,659.60x = 545,230.20 × 138,933.20
  4. Step 4: Simplify right side
    363,659.60x = 75,750,576,422.64
  5. Step 5: Solve for x
    x = 75,750,576,422.64/363,659.60
  6. Step 6: Final answer
    x = 208,300.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.